HET 01110 - CONE PENETROMETER SOIL - IS : 2720 (PART-IV)
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CONE PENETROMETER SOIL
For determining the liquid limit of soils. This is specially useful to obtain reliable and accurate results of those soil which have low plasticity index. The percentage moisture contents determined when cone with half angle of 15-30 minutes under a total sliding weight of 148 gm penetrates 25mm gives the liquid limit.
The test is based on the relationship between moisture content and the penetration of the cone into the soil sample. The moisture content at a given depth of penetration of the cone is taken as the liquid limit. As an inferential test, empirical correlations have been developed to assess the shear strength of soils at liquid limit.